To prepare your cluster, follow the following step

• Install the cluster using your FE1 by following normal ROCKS 5.1 installation procedure. Install your desired roll as you want. For this job, we will use SGE as main scheduler, We will configure SGE shadow master for scheduler HA task.
• In the “Cluster information” page, put your public central cluster name in “Cluster name” field, but put your real hostname (fe1.your.domain.name) into the hostname field. You can also use the same for URL
• In the network setup screen. Put your fe1 public IP BUT use central private IP, NOT fe1 private IP that you prepare for FE1. We will switch to the actual IP afterward. This is just to make sure that all compute nodes will use the central IP for everything.

May be we can also use FE1 IP as prepared, and add/change the central IP later. Anyways, I did this in this job, so let’s stick with it.

• Finish your cluster installation. Make sure that everything is working. Run insert-ethers to install every other nodes you like.
• Install FE2, specify all of its destined configuration ( not the central one ). Make sure that everything is working, and DO NOT insert-ethers and install any nodes from this Frontend yet.